Conductive composition and the method for producing the same, color filter and the method for producing the same

ABSTRACT

The embodiments of the invention provide a conductive composition and a method for producing the same, a color filter and a method for producing the same. The invention relates to the display technology field, and can simplify the process for producing the transparent conductive layer, and reduce the production cost; the conductive composition comprises a modified epoxy acrylic resin, a polyurethane acrylic resin, a polyaniline, a photo initiator, a fluorine-containing acrylate monomer, and optionally a filler and an auxiliary agent; wherein, in terms of weight ratio, the modified epoxy acrylic resin comprises 15-30 parts; the polyurethane acrylic resin comprises 10-20 parts; the polyaniline comprises 15-30 parts; the photo initiator comprises 2-4 parts; the fluorine-containing acrylate monomer comprises 15-35 parts; the filler comprises 0-25 parts; and the auxiliary agent comprises 0-8 parts; the conductive composition is useful for producing a display device.

CROSS-REFERENCE TO RELATED APPLICATION

This Application is a non-provisional Application of Chinese ApplicationNo. CN 201410157490.6, filed Apr. 17, 2014, in Chinese, the contents ofwhich are hereby incorporated by reference in their entirety.

FIELD OF THE INVENTION

The application relates to the display technology field, especially to aconductive composition and a method for producing the same, a colorfilter and a method for producing the same.

BACKGROUND OF THE INVENTION

For a display device, it is indispensable to prepare a transparentconductive layer; for instance, an antistatic layer in a Fringe-FieldSwitching (FFS) mode or Advanced-Super Dimensional Switching (ADS) modeliquid crystal display panel, and a common electrode in a TwistedNematic (TN) mode liquid crystal display panel.

In the prior art, the material of the transparent conductive layer isgenerally a transparent metal oxide conductive material, for instance,Indium Tin Oxide (ITO), and the like. However, the deposition of thetransparent metal oxide should be implemented by a sputtering device,therefore the production process is relatively complex, and theproduction cost is relatively high.

SUMMARY OF THE INVENTION

The embodiments of the invention provide a conductive composition andthe method for producing the same, and a transparent conductive materialformed by the conductive composition, a color filter and a method forproducing the same, and a display device, which can simplify theproduction process of the transparent conductive layer, and reduce theproduction cost.

In order to achieve the above described object, embodiments of theinvention provide the following technical solutions.

In one aspect, a conductive composition comprising a modified epoxyacrylic resin, a polyurethane acrylic resin, a polyaniline, a photoinitiator, a fluorine-containing acrylate monomer, and optionally afiller and an auxiliary agent is provided, wherein, in terms of weightratio, the modified epoxy acrylic resin comprises 15-30 parts; thepolyurethane acrylic resin comprises 10-20 parts; the polyanilinecomprises 15-30 parts; the photo initiator comprises 2-4 parts; thefluorine-containing acrylate monomer comprises 15-35 parts; the fillercomprises 0-25 parts; and the auxiliary agent comprises 0-8 parts;wherein, the auxiliary agent comprise one or more of a leveling agent,an antifoaming agent, and a dispersant.

Alternatively, the modified epoxy acrylic resin has a functionality offrom 2 to 5, and comprises one or more of a soybean oil modified epoxyacrylic resin, a modified bisphenol A epoxy acrylic resin, and an aminomodified bisphenol A epoxy acrylic resin; the polyurethane acrylic resinhas a functionality of from 2 to 6, and comprises an aliphaticpolyurethane acrylate and/or an aromatic polyurethane acrylate; thephoto initiator comprises one or more of2,4,6-trimethylbenzoyl-diphenylphosphine oxide, ethyl2,4,6-trimethylbenzoylphenylphosphonate,2-hydroxyl-2-methyl-1-phenyl-1-acetone,1-hydroxyl-cyclohexyl-phenylmethanone, and benzoin bis-methyl ether; thefluorine-containing acrylate monomer comprises one or more of perfluoroethyl acrylate, 1,1,2,2-tetrahydroperfluorodecyl acrylate,hexafluorobutyl acrylate, hexafluorobutyl methacrylate,2,2,2-trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate,dodecafluoroheptyl acrylate, tridecafluorooctyl methacrylate, andtridecafluorooctyl acrylate; and the filler comprises one or more ofbarium sulfate, talc powder, extinction powder, organic bentonite, fumesilica, heavy calcium carbonate and light calcium carbonate.

An organic transparent conductive material is further provided, which isformed from the above described conductive composition by a polymerizingreaction.

A method for producing the conductive composition is further provided,which comprises: mixing and dissolving a photo initiator with afluorine-containing acrylate monomer; adding a modified epoxy acrylicresin, a polyurethane acrylic resin and a polyaniline, and uniformlydispersing them, and optionally, at the same time of adding the modifiedepoxy acrylic resin, the polyurethane acrylic resin and the polyaniline,adding an auxiliary agent, wherein the auxiliary agent comprises one ormore of a leveling agent, an antifoaming agent, and a dispersant;optionally adding a filler and uniformly dispersing it; grinding theuniformly mixed material, to obtain an organic transparent conductivesolution; wherein, in terms of weight ratio, the modified epoxy acrylicresin comprises 15-30 parts; the polyurethane acrylic resin comprises10-20 parts; the polyaniline comprises 15-30 parts; the photo initiatorcomprises 2-4 parts; the fluorine-containing acrylate monomer comprises15-35 parts; the auxiliary agent comprises 0-8 parts; and the fillercomprises 0-25 parts.

Preferably, the ground material has a fineness of less than 10 μm.

Alternatively, the modified epoxy acrylic resin has a functionality offrom 2 to 5, and comprises one or more of a soybean oil modified epoxyacrylic resin, a modified bisphenol A epoxy acrylic resin, and an aminomodified bisphenol A epoxy acrylic resin; the polyurethane acrylic resinhas a functionality of from 2 to 6, and comprises an aliphaticpolyurethane acrylate and/or an aromatic polyurethane acrylate; thephoto initiator comprises one or more of2,4,6-trimethylbenzoyl-diphenylphosphine oxide, ethyl2,4,6-trimethylbenzoylphenylphosphonate,2-hydroxyl-2-methyl-1-phenyl-1-acetone,1-hydroxyl-cyclohexyl-phenylmethanone, and benzoin bis-methyl ether; thefluorine-containing acrylate monomer comprises one or more ofperfluoroethyl acrylate, 1,1,2,2-tetrahydroperfluorodecyl acrylate,hexafluorobutyl acrylate, hexafluorobutyl methacrylate,2,2,2-trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate,dodecafluoroheptyl acrylate, tridecafluorooctyl methacrylate, andtridecafluorooctyl acrylate; and the filler comprises one or more ofbarium sulfate, talc powder, extinction powder, organic bentonite, fumesilica, heavy calcium carbonate and light calcium carbonate.

In another aspect, a color filter is provided, which comprises a blackmatrix, a color filter layer, a post spacer, and an organic transparentconductive layer provided on a substrate; wherein the organictransparent conductive layer is provided on the first side or the secondside of the substrate; and the material of the organic transparentconductive layer is the above described transparent conductive material.

Preferably, the post spacer is provided on the first side of thesubstrate; the black matrix and the color filter layer are provided onthe second side of the substrate, and the black matrix has openings fordisposing the color filter layer.

More preferably, the organic transparent conductive layer is provided onthe second side of the substrate; wherein the black matrix and the colorfilter layer are provided between the organic transparent conductivelayer and the substrate.

A method for producing a color filter is further provided, whichcomprises: forming a black matrix, a color filter layer, a post spacer,and an organic transparent conductive layer on a substrate; wherein theprocess for forming the organic transparent conductive layer comprises:coating a transparent conductive solution on the first side or thesecond side of the substrate, and forming the organic transparentconductive layer by photo curing; the transparent conductive solution isprepared using the above described method.

Preferably, forming the black matrix, the color filter layer, and thepost spacer on the substrate specifically comprises: forming the postspacer on the first side of the substrate; forming the black matrix andthe color filter layer on the second side of the substrate; wherein thecolor filter layer is formed on the open area of the black matrix.

More preferably, the organic transparent conductive layer is formed onthe second side of the substrate; and the process for forming the blackmatrix, the color filter layer, and the organic transparent conductivelayer specifically comprises: forming a black matrix having plural ofopenings and a color filter layer on the surface at the second side ofthe substrate, wherein the color filter layer is formed on the open areaof the black matrix, and the color filter layer comprises at least a redlight resistance, a green light resistance and a blue light resistance;forming the organic transparent conductive layer on the surface of thesubstrate having the black matrix and the color filter layer formedthereon.

In another aspect, a display device comprising the above described colorfilter is provided.

The embodiments of the invention provide a conductive composition and amethod for producing the same, a transparent conductive material, acolor filter and a method for producing the same, and a display device,wherein the transparent conductive material is formed by the conductivecomposition; the conductive composition comprises a modified epoxyacrylic resin, a polyurethane acrylic resin, a polyaniline, a photoinitiator, a fluorine-containing acrylate monomer, and optionally afiller and an auxiliary agent; wherein, in terms of weight ratio, themodified epoxy acrylic resin comprises 15-30 parts; the polyurethaneacrylic resin comprises 10-20 parts; the polyaniline comprises 15-30parts; the photo initiator comprises 2-4 parts; the fluorine-containingacrylate monomer comprises 15-35 parts; the filler comprises 0-25 parts;and the auxiliary agent comprises 0-8 parts.

Thus, a transparent conductive solution can be prepared from the abovedescribed conductive composition, the transparent conductive solutioncan be directly coated onto the substrate surface, and then an organictransparent conductive layer is formed by photo curing. Compared to theprior art using a transparent metal oxide such as ITO as the transparentconductive layer material, the invention can not only efficientlysimplify the production process of the transparent conductive layer, butalso avoid the use of a sputtering device, so as to reduce theproduction cost.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in theembodiments of the invention or in prior art, the figures to be used inthe description of the embodiments or the prior art are brieflyillustrated below. Obviously, the figures illustrated below are onlyseveral embodiments of the invention. For a person skilled in the art,other figures may also be obtained according to these figures, withoutinventive works.

FIG. 1 is a flow scheme of the method for preparing an organictransparent conductive solution provided by one embodiment of theinvention;

FIG. 2 is a structural schematic diagram of a color filter provided bythe embodiment of the invention;

FIG. 3 is another structural schematic diagram of a color filterprovided by the embodiment of the invention;

FIG. 4 shows the hardness values measured for the organic transparentconductive layers provided by the embodiments of the invention;

FIG. 5 is a structural schematic diagram of a color filter provided bythe embodiment of the invention.

REFERENCE NUMBERS IN FIGURES

-   -   10—substrate;    -   20—black matrix;    -   30—color filter layer;    -   301—red light resistance;    -   302—green light resistance;    -   303—blue light resistance;    -   40—post spacer;    -   50—over coating (OC) layer;    -   60—organic transparent conductive layer.

DETAILED DESCRIPTION OF THE INVENTION

The technical solutions in embodiments of the invention will be clearlyand completely described below in combination with figures in theembodiments of the invention. Obviously, the described embodiments areonly a part of embodiments, not all the embodiments of the invention. Onthe basis of the embodiments in the invention, all of other embodiments,which may be obtained by a person skilled in the art without inventiveworks, fall within the scope protected by the invention.

One embodiment of the invention provides a conductive compositioncomprising a modified epoxy acrylic resin, a polyurethane acrylic resin,a polyaniline, a photo initiator, a fluorine-containing acrylatemonomer, and optionally a filler and an auxiliary agent; wherein, interms of weight ratio, the modified epoxy acrylic resin comprises 15-30parts; the polyurethane acrylic resin comprises 10-20 parts; thepolyaniline comprises 15-30 parts; the photo initiator comprises 2-4parts; the fluorine-containing acrylate monomer comprises 15-35 parts;the filler comprises 0-25 parts; and the auxiliary agent comprises 0-8parts. This conductive composition can form a transparent conductivematerial, which is an organic transparent conductive material, through apolymerizing reaction.

Accordingly, the embodiment of the invention further provides atransparent conductive material, the transparent conductive material isan organic transparent conductive material formed upon polymerization ofthe conductive composition of the invention.

On the basis of the above, a transparent conductive solution may beformulated using the above described conductive composition. Thetransparent conductive solution may be directly coated onto a substratesurface, and form an organic transparent conductive layer after photocuring (for example, curing by ultraviolet light). Compared to the priorart using a transparent metal oxide such as ITO as the transparentconductive layer material, not only the production process of thetransparent conductive layer may be efficiently simplified, but also theuse of a sputtering device may avoided, thereby the production cost islowered.

Without limiting to any theory, it is believed that the modified epoxyacrylic resin, the polyurethane acrylic resin and the polyanilineundergo a crosslinking polymerization reaction with thefluorine-containing acrylate monomer under the action of the photoinitiator, and form the final conductive film layer, wherein the epoxyacrylic resin functions to improve the reaction speed of thecrosslinking polymerization reaction, the polyurethane acrylic resinfunctions to improve the hardness of the film layer, and the polyanilinehas a conductive function.

It should be explained that, the fluorine-containing acrylate monomer ischosen due to its excellent properties, for instance, the C-F chain hasstrong rigidity, high chemical stability, good whether resistance, goodacid and base resistance and good oxidizing resistance, as well as highsurface activity, strong hydrophobic and oleophobic property, goodantistatic property and lubricity. The fluorine-containing acrylatemonomer, when used as one raw material of the above describedcomposition, may render the organic transparent conductive material goodperformance.

The filler means a particular solid filler for improving the performanceof the composite, and it may comprise various types of fillers havingdifferent functions; for example, the filler may comprise a extenderpigment for improving the wettability of the system (barium sulfate), athickener for improving the stickiness of the system (an organicbentonite), a modifier for improving the material strength and uniformdispersibility of particles (talc powder), and the like. Of course, thefiller may also comprise those having the other functions, which are notdefined herein. The specific type and amount added may be determinedaccording to practical requirements.

The photo initiator means a substance capable of producing a freeradical or an anions/cation upon light irradiation, so as to initiatethe polymerization reaction of monomers, to form a high molecularcompound. Among them, there are lots of types of the photo initiators.In the embodiments of the invention, the photo initiator is notparticularly limited as long as it is a photo initiator which can mix upwith the materials in the above described composition, and exert thelight initiating effect thereof.

The auxiliary agent means an auxiliary material added for improving theprocessing condition, improving the product quality, or rendering theproduct certain excellent characteristics; for example, a leveling agentfor improving the film-forming property, an antifoaming agent foreliminating gas foam in a liquid system, a dispersant for reducing theparticle aggregation in a dispersed system, and so on. Of course, theauxiliary agent may further comprise different auxiliary materials ofother types, which are not specifically defined herein.

On the basis of the above, optionally, the leveling agent may facilitatethe coating to form a flat, smooth, and even film layer during the filmformation by drying. The leveling agent may be specifically selectedfrom any one commercially available in the art, for example, BYK-300,BYK-306, BYK-307, BYK-310, BYK-315, BYK-320, BYK-323, BYK-325, andBYK-331, which are all manufactured and sold by BYK-Chemie, and thelike.

The antifoaming agent is useful for eliminating gas foam present in theliquid. The antifoaming agent mainly includes a foam breaker, a foaminhibitor or a defoamer, all of which are capable of achieving theeffect of eliminating gas foam, though the antifoaming principles areslightly different each other. The antifoaming agent may be specificallyselected from any one commercially available in the art, for exampleBYK-141, BYK-A530, BYK-020, BYK-022, BYK-024, BYK-028, BYK-034, BYK-052,BYK-053, BYK-055, BYK-057, which are all manufactured and sold byBYK-Chemie, and the like.

The dispersant may reduce the aggregation degree of solid particles orliquid droplets in the dispersed system, so as to ensure the relativestability of the dispersed system. The dispersant is a surfactant havingboth oleophilicity and hydrophilicity as two opposite properties at amolecular level. The specific dispersant may be selected from any onecommercially available in the art, for example, BYK-P104S, BYK-P104,BYK-101, BYK-103, BYK-107, BYK-108, BYK-110, BYK-111, BYK-161, which areall manufactured and sold by BYK-Chemie, and the like.

Furthermore, the modified epoxy acrylic resin has a functionality offrom 2 to 5, and may specifically comprise one or more of a soybean oilmodified epoxy acrylic resin, a modified bisphenol A epoxy acrylicresin, and an amino modified bisphenol A epoxy acrylic resin.

The polyurethane acrylic resin has a functionality of from 2 to 6, andmay specifically comprise an aliphatic polyurethane acrylate and/or anaromatic polyurethane acrylate.

The photo initiator may comprise one or more of2,4,6-trimethylbenzoyl-diphenylphosphine oxide, ethyl2,4,6-trimethylbenzoylphenylphosphonate,2-hydroxyl-2-methyl-1-phenyl-1-acetone,1-hydroxyl-cyclohexyl-phenylmethanone, and benzoin bis-methyl ether.

The fluorine-containing acrylate monomer may comprise one or more ofperfluoroethyl acrylate, 1,1,2,2-tetrahydroperfluorodecyl acrylate,hexafluorobutyl acrylate, hexafluorobutyl methacrylate,2,2,2-trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate,dodecafluoroheptyl acrylate, tridecafluorooctyl methacrylate, andtridecafluorooctyl acrylate.

The filler may comprise one or more of barium sulfate, talc powder,extinction powder, organic bentonite, fume silica, heavy calciumcarbonate and light calcium carbonate.

Herein, the functionality means the number of functional groups involvedin the reaction or the reaction ability of certain functional groups ina chemical reaction, that is, the number of the functional groups in amonomer which actually take part in the reaction in the reaction system.

Several specific Examples are provided below for illustrating theformulation of the organic transparent conductive material.

Example 1

20 parts of modified epoxy acrylic resin (EBECRYL 860, epoxidizedsoyabean oil acrylic resin, functionality of 2); 10 parts ofpolyurethane acrylic resin (CN9006NS from Sartomer Co., Ltd., aliphaticpolyurethane acrylate, functionality of 6); 25 parts of polyaniline(XA-BA02, Hubei Yuancheng Chemicals Co., Ltd.); 2 parts of photoinitiator (184, J&K Scientific Ltd.); 25 parts of tridecafluorooctylmethacrylate (Jintan Jinnuo Chemical Co., Ltd.); 10 parts of bariumsulfate (20HB, Micropowder Industry Co., Ltd.); 5 parts of talc powder(TP-8533, Guangxi Hezhou Kelong Micro-powder Co., Ltd.); 1 part ofleveling agent (BYK-300); 1 part of antifoaming agent (BYK-141); and 1part of dispersant (BYK-101) were weighted, in terms of weight ratio.

Example 2

15 parts of modified epoxy acrylic resin (EBECRYL 3420, modifiedbisphenol A acrylic resin, functionality of 3); 15 parts of polyurethaneacrylic resin (EBECRYL 264, aliphatic polyurethane acrylate,functionality of 3); 15 parts of polyaniline (XA-BA02, Hubei YuanchengChemicals Co., Ltd.); 3 parts of photo initiator (184, J&K ScientificLtd.); 22 parts of hexafluorobutyl methacrylate (Xeogia Fluorine-SiliconMaterial Co., Ltd.); 15 parts of barium sulfate (20HB, MicropowderIndustry Co., Ltd.); 5 parts of talc powder (TP-8533, Guangxi HezhouKelong Micro-powder Co., Ltd.); 5 parts of fume silica (AEROSIL 200,EVONIK); 2 parts of leveling agent (BYK-306); 1 part of antifoamingagent (BYK-141); and 1 part of dispersant (BYK-103) were weighted, interms of weight ratio.

Example 3

30 parts of modified epoxy acrylic resin (EBECRYL 860, epoxidizedsoyabean oil acrylic resin, functionality of 2); 10 parts ofpolyurethane acrylic resin (CN9006NS from Sartomer Co., Ltd., aliphaticpolyurethane acrylate, functionality of 6); 15 parts of polyaniline(XA-BA02, Hubei Yuancheng Chemicals Co., Ltd.); 4 parts of photoinitiator (TPO, SigmaAldrich); 15 parts of tridecafluorooctylmethacrylate (Jintan Jinnuo Chemical Co., Ltd.); 10 parts of bariumsulfate (20HB, Micropowder Industry Co., Ltd.); 4 parts of talc powder(TP-8533, Guangxi Hezhou Kelong Micro-powder Co., Ltd.); 4 parts of fumesilica (AEROSIL 200, EVONIK); 3 parts of leveling agent (BYK-300); 2parts of antifoaming agent (BYK-141); and 3 parts of dispersant(BYK-101) were weighted, in terms of weight ratio.

Example 4

15 parts of modified epoxy acrylic resin (EBECRYL 3703, amino-modifiedbisphenol A acrylic resin, functionality of 5); 10 parts of polyurethaneacrylic resin (CN9006NS from Sartomer Co., Ltd., aliphatic polyurethaneacrylate, functionality of 6); 15 parts of polyaniline (XA-BA02, HubeiYuancheng Chemicals Co., Ltd.); 3 parts of photo initiator (184, J&KScientific Ltd.); 35 parts of tridecafluorooctyl methacrylate (JintanJinnuo Chemical Co., Ltd.); 12 parts of barium sulfate (20HB,Micropowder Industry Co., Ltd.); 5 parts of talc powder (TP-8533,Guangxi Hezhou Kelong Micro-powder Co., Ltd.); 2 parts of leveling agent(BYK-310); 1 part of antifoaming agent (BYK-141); and 2 parts ofdispersant (BYK-107) were weighted, in terms of weight ratio.

Example 5

19 parts of modified epoxy acrylic resin (EBECRYL 3420, modifiedbisphenol A acrylic resin, functionality of 3); 15 parts of polyurethaneacrylic resin (EBECRYL 264, aliphatic polyurethane acrylate,functionality of 3); 30 parts of polyaniline (XA-BA02, Hubei YuanchengChemicals Co., Ltd.); 3 parts of photo initiator (184, J&K ScientificLtd.); 15 parts of tridecafluorooctyl methacrylate (Jintan JinnuoChemical Co., Ltd.); 8 parts of barium sulfate (20HB, MicropowderIndustry Co., Ltd.); 5 parts of talc powder (TP-8533, Guangxi HezhouKelong Micro-powder Co., Ltd.); 2 parts of fume silica (AEROSIL 200,EVONIK); 1 part of leveling agent (BYK-300); 1 part of antifoaming agent(BYK-020); and 1 part of dispersant (BYK-101) were weighted, in terms ofweight ratio.

Example 6

18 parts of modified epoxy acrylic resin (EBECRYL 3420, modifiedbisphenol A acrylic resin, functionality of 3); 18 parts of polyurethaneacrylic resin (EBECRYL 264, aliphatic polyurethane acrylate,functionality of 3); 18 parts of polyaniline (XA-BA02, Hubei YuanchengChemicals Co., Ltd.); 3 parts of photo initiator (TPO, SigmaAldrich); 20parts of tridecafluorooctyl methacrylate (Jintan Jinnuo Chemical Co.,Ltd.); 12 parts of barium sulfate (20HB, Micropowder Industry Co.,Ltd.); 5 parts of talc powder (TP-8533, Guangxi Hezhou KelongMicro-powder Co., Ltd.); 3 parts of fume silica (AEROSIL 200, EVONIK); 1part of leveling agent (BYK-300); 1 part of antifoaming agent (BYK-141);and 1 part of dispersant (BYK-101) were weighted, in terms of weightratio.

Example 7

25 parts of modified epoxy acrylic resin (EBECRYL 860, epoxidizedsoyabean oil acrylic resin, functionality of 2); 10 parts ofpolyurethane acrylic resin (DOUBLEMER® 88A, aromatic polyurethaneacrylate, functionality of 6); 25 parts of polyaniline (XA-BA02, HubeiYuancheng Chemicals Co., Ltd.); 2 parts of photo initiator (184, J&KScientific Ltd.); 35 parts of tridecafluorooctyl methacrylate (JintanJinnuo Chemical Co., Ltd.); 1 part of leveling agent (BYK-300); 1 partof antifoaming agent (BYK-141); and 1 part of dispersant (BYK-101) wereweighted, in terms of weight ratio.

According to any formulation in the above described Examples and incombination with a suitable formulating method, the organic transparentconductive material may be obtained.

On the basis of the above, the embodiments of the invention furtherprovide a method for formulating a transparent conductive solution. Themethod may comprise: mixing and dissolving a photo initiator with afluorine-containing acrylate monomer; adding a modified epoxy acrylicresin, a polyurethane acrylic resin and a polyaniline, and uniformlydispersing them; adding a filler and uniformly dispersing it; grindingthe uniformly mixed material, to obtain the organic transparentconductive solution, wherein, in terms of weight ratio, the modifiedepoxy acrylic resin comprises 15-30 parts; the polyurethane acrylicresin comprises 10-20 parts; the polyaniline comprises 15-30 parts; thephoto initiator comprises 2-4 parts; the fluorine-containing acrylatemonomer comprises 15-35 parts; and the filler comprises 15-25 parts.

It should be explained that, the organic transparent conductive solutionobtained according to above described method is actually a (ultraviolet)photocurable oil, and an organic transparent conductive layer may beformed upon subjecting the organic transparent conductive solution to(ultraviolet) light curing.

Herein, when the photocurable oil is an ultraviolet light curable oil,it may be subjected to ultraviolet light curing in an irradiationdevice; wherein the irradiation device may comprise any of a lowpressure mercury lamp, a middle pressure mercury lamp, a high pressuremercury lamp, and a Light-Emitting Diode (LED) light sources; of course,the irradiation device may also comprise any other device emittingultraviolet light. In one embodiment of the invention, a high pressuremercury lamp is preferably used as the irradiation light source ofultraviolet light. In this regard, furthermore, the wavelength of theultraviolet light is in the range of 200-400 nm, the irradiation energyof the ultraviolet light is in the range of 500-1200 mJ/cm², andpreferably 600-800 mJ/cm².

On the basis of the above, at the same time of adding the modified epoxyacrylic resin, the polyurethane acrylic resin and the polyaniline, anauxiliary agent may be further added; in terms of weight ratio, theauxiliary agent comprises 3-8 parts; wherein the auxiliary agent maycomprise one or more of a leveling agent, an antifoaming agent and adispersant.

Furthermore, the modified epoxy acrylic resin has a functionality offrom 2 to 5, and comprises one or more of a soybean oil modified epoxyacrylic resin, a modified bisphenol A epoxy acrylic resin, and an aminomodified bisphenol A epoxy acrylic resin.

The polyurethane acrylic resin has a functionality of from 2 to 6, andcomprises an aliphatic polyurethane acrylate and/or an aromaticpolyurethane acrylate.

The photo initiator comprises one or more of2,4,6-trimethylbenzoyl-diphenylphosphine oxide, ethyl2,4,6-trimethylbenzoylphenylphosphonate,2-hydroxyl-2-methyl-1-phenyl-1-acetone,1-hydroxyl-cyclohexyl-phenylmethanone, and benzoin bis-methyl ether.

The fluorine-containing acrylate monomer comprises one or more ofperfluoroethyl acrylate, 1,1,2,2-tetrahydroperfluorodecyl acrylate,hexafluorobutyl acrylate, hexafluorobutyl methacrylate,2,2,2-trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate,dodecafluoroheptyl acrylate, tridecafluorooctyl methacrylate, andtridecafluorooctyl acrylate.

The filler comprises one or more of barium sulfate, talc powder,extinction powder, organic bentonite, fume silica, heavy calciumcarbonate and light calcium carbonate.

On the basis of the above description it can be seen that, theformulation of the organic transparent conductive solution requiressubjecting various materials to mixing, dissolving, dispersing, andgrinding. In this regard, preferably, the ground material has a finenessof less than 10 μm, which facilitate forming an uniformly dispersedorganic transparent conductive solution, so as to improve the uniformityand smoothness of the organic transparent conductive layer.

It should be explained that, the embodiments of the invention do notspecifically define the manner or device for implementing the abovedescribed process, provided that good effects can be achieved.

On the basis of the above, as shown by FIG. 1, the method forformulating the organic transparent conductive solution may specificallycomprise:

S101, mixing and dissolving a photo initiator with a fluorine-containingacrylate monomer;

S102, adding a modified epoxy acrylic resin, a polyurethane acrylicresin, a polyaniline, and an auxiliary agent, and uniformly dispersingby a high speed dispersing machine;

S103, adding a filler, uniformly dispersing by a high speed dispersingmachine, and then standing for 10 to 15 minutes, allowing the filler tobe sufficiently wetted in the system; and

S104, grinding by a three-roll grinding machine to a material finenessof less than 10 μm, so as to obtain an ultraviolet light curable oil,that is, the organic transparent conductive solution.

On the basis of the above described steps S101-S104, the organictransparent conductive solution may be obtained. Herein, thefluorine-containing acrylate monomer (the same as the monomer in stepS101) may be further added again as required, and the coating should beinitiated upon the viscosity of the mixed material is adjusted to arequired degree; wherein the viscosity may be between 100 and 10000 cp.When an organic transparent conductive layer is required to be produced,the above described conductive solution may be simply coated on thesurface of the substrate in a manner of blade coating or spin coating,and the organic transparent conductive layer is formed after ultravioletlight curing.

One embodiment of the invention provides a color filter, as shown inFIG. 2 and FIG. 3, the color filter may comprise a black matrix 20, acolor filter layer 30, a post spacer 40, and an organic transparentconductive layer 60 provided on a substrate 10, wherein the organictransparent conductive layer 60 is provided on the first side or thesecond side of the substrate 10; and the material of the organictransparent conductive layer 60 is the above described organictransparent conductive material.

Herein, the post spacer 40 may be disposed at the positionscorresponding to the black matrix 20. The substrate 10 may be a glasssubstrate or a flexible substrate, and it is not specifically limitedherein. The flexible substrate may comprise any of PolyethyleneNaphthalate (PEN), Polyethylene Terephthalate (PET), Polyether Sulfones(PES) or Polyimide (PI).

When the color filter is applied to a liquid crystal display panel, theliquid crystal display panel may comprise an array substrate and a colorfilm substrate, and a liquid crystal layer between them; wherein beforealignment, the color filter should be coated with a PI liquid and anorientated layer is formed by rubbing. Thus, in the case that the liquidcrystal display panel is one of TN mode, the color filter may comprisean organic transparent conductive layer 60 as the common electrode; atthis time, the organic transparent conductive layer 60 may be producedon the side of the substrate 10 closer to the liquid crystal layer, thatis, the first side of the substrate 10, as shown in FIG. 2. In the casethat the liquid crystal display panel is one of FFS mode or ADS mode,the color filter may comprise the organic transparent conductive layer60 as the antistatic layer; at this time, the organic transparentconductive layer 60 may be produced on the side of the substrate 10 awayfrom the liquid crystal layer, that is, the second side of the substrate10, as shown in FIG. 3.

The embodiment of the invention choose the organic transparentconductive material for producing the organic transparent conductivelayer 60 which may replace the transparent metal oxide such as ITOconductive layer in the prior art; in this way, not only the complexityof the process may be reduced, but also the use of sputtering device maybe avoided, so as to reduce the production cost.

In order to satisfy the requirements of a display device for theperformance of the transparent conductive layer, the organic transparentconductive layer 60 should have certain hardness. Specifically, thehardness of the organic transparent conductive layer 60 may be measuredby the following method: the cores of MITSUBISHI pencils with hardnessof 6B to 9H are cut into column shape, respectively, and rubbed down ona 400-mesh sand paper; the pencils with different hardness aresequentially pushed forward 5 mm on the organic transparent conductivelayer 60, to draw 5 lines in total; wherein the load applied on the tipof the pencil is 1 Kg, and the angle between the pencil and the surfaceof the organic transparent conductive layer 60 is 45°; the marks of thepencil are rubbed out using a eraser, and the presence or absence ofscratch on the surface of the organic transparent conductive layer 60 ischecked; wherein the scratch produced by a part of pencils is 1 line orless, then the maximum hardness of such pencils is the hardness of theorganic transparent conductive layer 60.

For the organic transparent conductive layers 60 produced using theformulations of the organic transparent conductive materials provided inthe above described specific Examples, the hardness thereof were testedby the above method, and the testing results were shown in FIG. 4. Itcan be seen that, the organic transparent conductive layers 60 providedby the Examples of the invention have hardness basically between 5H and7H, having good mechanical performance.

On the basis of the above, when the organic transparent conductive layer60 is provided as the antistatic layer on the outermost side of thecolor filter, it also functions as a protective layer.

In addition, in order to prevent light leaking, the black matrix 20 andthe color filter layer 30 are disposed overlapping each other, but sucharrangement may result in the overlap produced inside the color filter;in this case, as shown by FIG. 2 and FIG. 3, the overlap between theblack matrix 20 and the color filter layer 30 may be filled by providingan Over Coating (OC) 50, to eliminate such overlap.

Even in the case of eliminating the above described overlap by the OClayer 50, the color filter may further comprise overlaps formed by thepresence of post spacer (PS) 40. Specifically, the orientated layer isprovided on the side of the post spacer 40 away from the substrate 10,and directly contacts with the post spacer 40; because the post spacer40 has a function of supporting, it may be used for controlling the boxthickness of the liquid crystal display device, therefore such overlapcould not be eliminated by producing the OC layer 50. In such way, thefilm-forming and rubbing process of the orientated layer will bedirectly effected on the post spacer 40, and consequently, the presenceof such overlap may cause disadvantage influence to the production ofthe orientated layer, for example, it may cause the display defects ofthe liquid crystal display panel.

Furthermore, because the blocking ability of the material of the OClayer 50 is insufficient, it may lead to the entrance of ions in thecolor filter layer 30 into the liquid crystal layer, resulting incontamination in the box, and thereby forming residual voltage, whichmay cause defects such as afterimage, streaking, and the like.

In this regard, preferably, the post spacer 40 may be provided on thefirst side of the substrate 10; the black matrix 20 and the color filterlayer 30 may be provided on the second side of the substrate 10, and theblack matrix 20 has openings for providing the color filter layer 30, asshown in FIG. 5.

Wherein, the first side is close to the liquid crystal layer, and thesecond side is away from the liquid crystal layer.

In this way, by providing the black matrix 20 and the color filter layer30 on the side of the substrate 10 away from the liquid crystal layer,the production of the OC layer 50 may be omitted, which may not onlysimplify the process, but also avoid the display defects which may becaused by the insufficient blocking ability of the OC layer material.

On the basis of the above, more preferably, the organic transparentconductive layer 60 may be provided on the second side of the substrate10; wherein the black matrix 20 and the color filter layer 30 areprovided between the organic transparent conductive layer 60 and thesubstrate 10.

Specifically, the black matrix 20 may be provided close to the substrate10, and the color filter layer 30 may be provided close to the organictransparent conductive layer 60; or alternately, the black matrix 20 maybe provided close to the organic transparent conductive layer 60, andthe color filter layer 30 may be provided close to the substrate 10. Theembodiment of the invention does not specifically define the relativeposition of the black matrix 20 and the color filter layer 30, providedthat the color filter layer 30 is located in the open area of the blackmatrix 20, to achieve the prevention of light mixing.

The color filter based on the above described structure may be appliedto a liquid crystal display panel in FFS mode or in ADS mode; whereinthe organic transparent conductive layer 60 is the antistatic layer ofthe color filter surface.

When the color filter is applied to a liquid crystal display panel in TNmode, the organic transparent conductive layer 60 may be provided on thefirst side of the substrate 10; wherein the post spacer 40 is providedon the side of the organic transparent conductive layer 60 away from thesubstrate 10. At this time, the organic transparent conductive layer 60may be used as the common electrode of the color filter.

Under such conditions, the color filter should further comprise aprotective layer provided on the second side of the substrate 10; theblack matrix 20 and the color filter layer 30 are between the protectivelayer and the substrate 10.

One embodiment of the invention further provides a method for producinga color filter, comprising: forming a black matrix 20, a color filterlayer 30, a post spacer 40, and an organic transparent conductive layer60 on a substrate 10; wherein the process for forming the organictransparent conductive layer 60 specifically comprises: coating atransparent conductive solution on the first side or the second side ofthe substrate 10, and forming the organic transparent conductive layer60 by ultraviolet light curing; the transparent conductive solution isformulated by the above described method for formulating a conductivesolution.

On the basis of the above, preferably, forming a black matrix 20, acolor filter layer 30, and a post spacer 40 on the substrate 10 mayspecifically comprise: forming the post spacer 40 on the first side ofthe substrate 10; forming the black matrix 20 and the color filter layer30 on the second side of the substrate 10; wherein the color filterlayer 30 may be formed on the open area of the black matrix 20.

More preferably, the process for forming the organic transparentconductive layer 60; the black matrix 20, the color filter layer 30, andthe organic transparent conductive layer 60 on the second side of thesubstrate 10 specifically comprises: forming the black matrix 20 havingopenings and the color filter layer 30 on the surface at the second sideof the substrate 10; wherein the color filter layer 30 may be formed onthe open area of the black matrix 20; the color filter layer 30comprises at least a red light resistance 301, a green light resistance302 and a blue light resistance 303; and forming the organic transparentconductive layer 60 on the substrate surface with the black matrix 20and the color filter layer 30 formed thereon.

It should be explained that, when the black matrix 20 and the colorfilter layer 30 are formed on the surface at the second side of thesubstrate 10, the black matrix 20 having openings may be firstly formed,and the color filter layer 30 is then formed over the black matrix 20 atthe position corresponding to the open area; alternatively, the colorfilter layer 30 may be firstly formed, and the black matrix 20 is thenformed over the color filter layer 30, and the color filter layer 30corresponds to the open area of the black matrix 20.

A specific embodiment is provided below for illustrating the process forproducing a color filter; wherein the color filter has an antistaticlayer, and may be applied to a liquid crystal display panel in FFS modeor ADS mode.

On the basis of the above, the producing process of the color filter mayspecifically comprise the following steps:

S201, providing substrate 10; wherein, the substrate 10 is a glasssubstrate;

S202, forming a black light blocking layer on the surface at the secondside of the substrate 10 in the manner of spin coating or blade coating,and forming a black matrix 20 having openings by exposing, developing,and baking;

S203, forming a layer of red filter layer material on the substratesurface with the black matrix 20 formed thereon in the manner of spincoating or blade coating, and forming a red light resistance 301 byexposing, developing, and baking; forming a layer of green filter layermaterial on the substrate surface with the red light resistance 301formed thereon in the manner of spin coating or blade coating, andforming a green light resistance 302 by exposing, developing, andbaking; and forming a layer of blue filter layer material on thesubstrate surface with the green light resistance 302 formed thereon inthe manner of spin coating or blade coating, and forming a blue lightresistance 303 by exposing, developing, and baking;

wherein, the red light resistance 301, the green light resistance 302,and the blue light resistance 303 are alternatively arranged, composingthe color filter layer 30 together; and the red light resistance 301,the green light resistance 302, and the blue light resistance 303 allcorrespond to the open area of the black matrix 20;

S204, forming a layer of organic transparent conductive solution onsubstrate surface with the color filter layer 30 formed thereon in themanner of spin coating or blade coating, and forming the organictransparent conductive layer 60 by ultraviolet light curing;

Herein, the organic transparent conductive layer 60 is the antistaticlayer of the color filter;

S205, coating a layer of post spacer material on the surface at thefirst side of the substrate 10, forming the post spacer 40 by aphotolithography process.

A color filter may be produced through the above described stepsS201-S205. By providing the post spacer 40 on one side of the substrate10, while providing the black matrix 20, the color filter layer 30, andthe organic transparent insulation layer 60 on the other side of thesubstrate 10, not only the overlap produced by alternatively arrangementof the black matrix 20 and the color filter layer 30 may be eliminated,but also the production process of the transparent conductive layer maybe simplified, and the use of a sputtering device is avoided, so as toreduce the cost.

Alternatively, the organic transparent conductive layer 60 may also beformed on the first side of the substrate 10; in such case, the processfor forming the post spacer 40 and the organic transparent conductivelayer 60 may specifically comprise: forming an organic transparentconductive layer 60 on the surface at the first side of the substrate10; forming a post spacer 40 on the surface with the organic transparentconductive layer 60 formed thereon; wherein the position of the postspacer 40 corresponds to the position of the black matrix 30.

Herein, the organic transparent conductive layer 60 may be used as thecommon electrode on the color filter, and the color filter may beapplied to the liquid crystal display panel in TN mode.

One embodiment of the invention further provides a display devicecomprising the above described color filter. The display device may be aliquid crystal panel, an electronic paper, an OLED (Organic LightEmitting Diode) panel, a mobile phone, a tablet computer, a television,a displayer, a notebook computer, a digital frame, a navigator, and anyother product or component having display function.

The above described embodiments are only the specific embodiments of theinvention, but protection scope of the invention is not limited thereto.Any replacement or alternation, which may be easily recognized by aperson skilled in the art within technical scope disclosed by theinvention, should be included in the protection scope of the invention.Therefore, the protection scope of the invention should be determined bythe protection scope of the claims.

What is claimed is:
 1. A conductive composition consisting of modifiedepoxy acrylic resin, a polyurethane acrylic resin, a polyaniline, aphoto initiator, a fluorine-containing acrylate monomer, and optionallya filler and an auxiliary agent; wherein, in terms of weight ratio, themodified epoxy acrylic resin is 15-30 parts; the polyurethane acrylicresin is 10-20 parts; the polyaniline is 15-30 parts; the photoinitiator is 2-4 parts; the fluorine-containing acrylate monomer is15-35 parts; the filler is 0-25 parts; and the auxiliary agent is 0-8parts; wherein, the auxiliary agent comprises one or more of a levelingagent, an antifoaming agent, and a dispersant.
 2. The conductivecomposition according to claim 1, wherein the modified epoxy acrylicresin has a functionality of from 2 to 5, and comprises one or more of asoybean oil modified epoxy acrylic resin, a modified bisphenol A epoxyacrylic resin, and an amino modified bisphenol A epoxy acrylic resin. 3.The conductive composition according to claim 1, wherein thepolyurethane acrylic resin has a functionality of 2 to 6, and comprisesan aliphatic polyurethane acrylate and/or an aromatic polyurethaneacrylate.
 4. The conductive composition according to claim 1, whereinthe photo initiator comprises one or more of2,4,6-trimethylbenzoyl-diphenylphosphine oxide, ethyl2,4,6-trimethylbenzoylphenylphosphonate,2-hydroxyl-2-methyl-1-phenyl-1-acetone,1-hydroxyl-cyclohexyl-phenylmethanone, and benzoin bis-methyl ether. 5.The conductive composition according to claim 1, wherein thefluorine-containing acrylate monomer comprises one or more ofperfluoroethyl acrylate, 1,1,2,2-tetrahydroperfluorodecyl acrylate,hexafluorobutyl acrylate, hexafluorobutyl methacrylate,2,2,2-trifluoroethyl methacrylate, dodecafluoroheptyl methacrylate,dodecafluoroheptyl acrylate, tridecafluorooctyl methacrylate, andtridecafluorooctyl acrylate.
 6. The conductive composition according toclaim 1, wherein the filler comprises one or more of barium sulfate,talc powder, extinction powder, organic bentonite, fume silica, heavycalcium carbonate and light calcium carbonate.